CVE-2026-86827: Unknown Backwpup

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The BackWPup WordPress plugin before 5.7.7 does not verify that a request to its cron-triggered backup execution handler actually originates from WordPress's internal scheduled-event dispatch, allowing unauthenticated attackers to force any existing backup job to run immediately, independent of its configured trigger type or schedule.

Affected products

• Unknown Backwpup: from 3.3, before 5.7.7 (fixed in 5.7.7)

Published 2026-10-08. Last modified 2026-10-08.